./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/modulus-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 573a31c00e41ae75ac0c33bb566a9b1a0edc6ad80bfad98caf671cb01963ec0c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 23:14:01,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:14:01,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:14:01,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:14:01,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:14:01,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:14:01,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:14:01,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:14:01,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:14:01,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:14:01,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:14:01,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:14:01,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:14:01,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:14:01,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:14:01,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:14:01,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:14:01,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:14:01,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:14:01,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:14:01,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:14:01,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:14:01,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:14:01,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:14:01,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:14:01,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:14:01,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:14:01,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:14:01,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:14:01,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:14:01,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:14:01,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:14:01,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:14:01,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:14:01,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:14:01,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:14:01,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:14:01,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:14:01,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:14:01,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:14:01,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:14:01,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-22 23:14:01,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:14:01,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:14:01,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-22 23:14:01,944 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-22 23:14:01,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:14:01,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:14:01,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:14:01,946 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 23:14:01,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:14:01,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 23:14:01,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:14:01,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:14:01,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:14:01,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:14:01,947 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 23:14:01,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:14:01,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:14:01,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:14:01,948 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-22 23:14:01,949 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-22 23:14:01,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:14:01,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-22 23:14:01,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:14:01,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:14:01,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:14:01,950 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-22 23:14:01,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:14:01,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:14:01,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573a31c00e41ae75ac0c33bb566a9b1a0edc6ad80bfad98caf671cb01963ec0c [2021-11-22 23:14:02,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:14:02,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:14:02,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:14:02,314 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:14:02,315 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:14:02,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/bitvector/modulus-2.i [2021-11-22 23:14:02,414 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/data/099c2b054/de714f498f5142faa6774b3ed3d30198/FLAG065b71c20 [2021-11-22 23:14:02,952 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:14:02,953 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/sv-benchmarks/c/bitvector/modulus-2.i [2021-11-22 23:14:02,962 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/data/099c2b054/de714f498f5142faa6774b3ed3d30198/FLAG065b71c20 [2021-11-22 23:14:03,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/data/099c2b054/de714f498f5142faa6774b3ed3d30198 [2021-11-22 23:14:03,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:14:03,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:14:03,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:14:03,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:14:03,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:14:03,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:14:03" (1/1) ... [2021-11-22 23:14:03,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a897b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:03, skipping insertion in model container [2021-11-22 23:14:03,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:14:03" (1/1) ... [2021-11-22 23:14:03,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:14:03,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:14:03,598 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/sv-benchmarks/c/bitvector/modulus-2.i[1252,1265] [2021-11-22 23:14:03,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:14:03,656 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:14:03,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/sv-benchmarks/c/bitvector/modulus-2.i[1252,1265] [2021-11-22 23:14:03,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:14:03,728 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:14:03,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:03 WrapperNode [2021-11-22 23:14:03,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:14:03,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:14:03,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:14:03,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:14:03,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:03" (1/1) ... [2021-11-22 23:14:03,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:03" (1/1) ... [2021-11-22 23:14:03,785 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2021-11-22 23:14:03,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:14:03,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:14:03,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:14:03,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:14:03,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:03" (1/1) ... [2021-11-22 23:14:03,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:03" (1/1) ... [2021-11-22 23:14:03,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:03" (1/1) ... [2021-11-22 23:14:03,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:03" (1/1) ... [2021-11-22 23:14:03,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:03" (1/1) ... [2021-11-22 23:14:03,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:03" (1/1) ... [2021-11-22 23:14:03,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:03" (1/1) ... [2021-11-22 23:14:03,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:14:03,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:14:03,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:14:03,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:14:03,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:03" (1/1) ... [2021-11-22 23:14:03,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-22 23:14:03,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-22 23:14:03,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-22 23:14:03,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-22 23:14:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:14:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:14:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:14:03,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:14:04,027 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:14:04,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:14:04,161 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:14:04,198 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:14:04,199 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 23:14:04,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:14:04 BoogieIcfgContainer [2021-11-22 23:14:04,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:14:04,203 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-22 23:14:04,203 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-22 23:14:04,219 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-22 23:14:04,219 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:14:04" (1/1) ... [2021-11-22 23:14:04,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:14:04,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:14:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 10 states and 13 transitions. [2021-11-22 23:14:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2021-11-22 23:14:04,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-22 23:14:04,308 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:14:04,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:14:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:14:04,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 23:14:04,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:14:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:14:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:14:05,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 12 states and 17 transitions. [2021-11-22 23:14:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 17 transitions. [2021-11-22 23:14:05,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 23:14:05,450 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:14:05,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:14:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:14:05,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 23:14:05,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:14:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:14:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:14:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 13 states and 21 transitions. [2021-11-22 23:14:05,644 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 21 transitions. [2021-11-22 23:14:05,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 23:14:05,648 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:14:05,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:14:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:14:05,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 23:14:05,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:14:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 23:14:06,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:14:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 9 states and 13 transitions. [2021-11-22 23:14:06,491 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 13 transitions. [2021-11-22 23:14:06,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 23:14:06,491 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 4 iterations. [2021-11-22 23:14:06,506 INFO L754 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-11-22 23:14:06,537 INFO L560 CodeCheckObserver]: Invariant with dag size 9 [2021-11-22 23:14:06,550 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-22 23:14:06,550 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-22 23:14:06,551 INFO L560 CodeCheckObserver]: Invariant with dag size 5 [2021-11-22 23:14:06,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 22.11 11:14:06 ImpRootNode [2021-11-22 23:14:06,553 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-22 23:14:06,555 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 23:14:06,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 23:14:06,557 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 23:14:06,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:14:04" (3/4) ... [2021-11-22 23:14:06,562 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 23:14:06,584 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-22 23:14:06,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-22 23:14:06,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-22 23:14:06,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 23:14:06,651 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-22 23:14:06,658 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 23:14:06,660 INFO L158 Benchmark]: Toolchain (without parser) took 3333.90ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 55.3MB in the beginning and 52.7MB in the end (delta: 2.5MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2021-11-22 23:14:06,661 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 88.1MB. Free memory was 43.7MB in the beginning and 43.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 23:14:06,662 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.08ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 54.9MB in the beginning and 85.0MB in the end (delta: -30.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 23:14:06,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.25ms. Allocated memory is still 109.1MB. Free memory was 85.0MB in the beginning and 83.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 23:14:06,666 INFO L158 Benchmark]: Boogie Preprocessor took 48.77ms. Allocated memory is still 109.1MB. Free memory was 83.3MB in the beginning and 82.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 23:14:06,667 INFO L158 Benchmark]: RCFGBuilder took 365.28ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 71.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 23:14:06,669 INFO L158 Benchmark]: CodeCheck took 2350.03ms. Allocated memory is still 109.1MB. Free memory was 71.9MB in the beginning and 55.4MB in the end (delta: 16.4MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2021-11-22 23:14:06,669 INFO L158 Benchmark]: Witness Printer took 103.33ms. Allocated memory is still 109.1MB. Free memory was 55.4MB in the beginning and 52.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 23:14:06,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 9 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 162 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 9 NumberOfNonLiveVariables, 127 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 29]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 < d % 4294967296 && m == n - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 < d % 4294967296 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 88.1MB. Free memory was 43.7MB in the beginning and 43.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.08ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 54.9MB in the beginning and 85.0MB in the end (delta: -30.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.25ms. Allocated memory is still 109.1MB. Free memory was 85.0MB in the beginning and 83.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.77ms. Allocated memory is still 109.1MB. Free memory was 83.3MB in the beginning and 82.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 365.28ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 71.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 2350.03ms. Allocated memory is still 109.1MB. Free memory was 71.9MB in the beginning and 55.4MB in the end (delta: 16.4MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Witness Printer took 103.33ms. Allocated memory is still 109.1MB. Free memory was 55.4MB in the beginning and 52.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2021-11-22 23:14:06,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61155143-5c4a-4f80-8b17-1b12e61ed271/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE